Improvement in the manufacture of hinge-hooks



W. J. LEWIS.

` Improvement in the Manufacture of Hinge-Hooks,

No. 130,508. Patented Aug.1s1 812 WILLIAM J. LEWIS, PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN THE MANUFACTURE OF HiNGE-HOOKS.

Specification forming part of Letters Patent No. 130,508, dated August 13, 1872.

SPECIFICATION.

To all whom it may concern:

Be it known that I, WILLIAM J. LEwIs, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Manufacture of Hinge-Hooks; and I do hereby declare the following to be a full, clear, and exact description thereof, .reference being had to the accompanying drawing making part of this specification, in which- Figure l is a perspective view of a set of dies such as I employ in the manufacture of hinge-hooks, such dies being represented as open, and with a blank imposition for griping and upsetting. Fig. 2 is a longitudinal vertical section of the upsetting-die of Fig. 1. Figs. 3 and 4 are reduced sectional views of the devices of Fig. 1, in different positions. Fig. 5 is a side view of the hinge-hook complete; and Fig. 6 shows by a like but reduced view the same hook with a different attachment, anda head for driving.

Like letters of reference indicate like parts in each.

Heretofore, in the manufacture of the hookhalf of a hook-and-eye hinge the pin has com monlybeen welded by hand-forging into an eye formed on the end of the shank. To save the hand labor requisite in this operation, and at the same time produce a better article, I have devised a machine for making such hinge-hooksl by upsetting the base end of the pin at the point of its junction with the shank, the rod or bar from which both are to be made being bent at the proper point for that purpose. As the dies which constitute the operative parts may be combined with various forms and constructions of devices for imparting to them the n10- vtions desired, Iwill describe such dies with particular reference to the method of operation involved, and also will describe the article produced, so as to enable others skilled in the art to make, use, and operate my invention.

On the end of an iron rod or bar, a', I bend a suiicient length, b', to form the shank b of the half-hinge. The rod is then caught between a pair of griping-dies, g g, with the bent end toward an upsetting-die, h, and with a sufficient length protruding beyond the ends -is of suitable form for this purpose.

of the gripingdies, as at m, to furnish material for upsetting 0r swaging an annular flan ge, n, around the base of the pin a, as shown in Fig. 4. The cavity h of the upsetting-die h On the dies being opened and the work withdrawn, the elbowed and upset end of the rod a is cut off at such point as to give a pin, a, of the length desired. A screw-thread/is then cut on the shank b, as in Fig. 5, or a barbed point is made, as in Fig. 6, or an eye or other means of fastening, as may be preferred, is made, and after the usual finishing the article is ready for market or use.

The annular iiange n need not necessarily extend all the way around the base of the pin, its function being to provide a seat for the eye part or other half of the hinge, and such seat may be made longer or shorter, broad or narrow, as may be preferred. Also, it may be made inclined, or of spiral form, as in cast-metal hook-,and-eye hinges.

The same mode of manufacture may be applied to the making of the hook-half of hookand-eye butt hinges. If so preferred,l the rod a may be cut into blanks of suitable length, and bent and upset separately.

The hinge-hook of Fig. 6 is to be driven into the post or frame. In order that the seat may not. be upset by driving I make on the outer end of the shank b, just below the seat n, a projecting head, s, which will receive the blows of the hammer. This head may be made on all that class of hooks which are to be driven in. It is, by means of a suitable 4cavity in the die'h, at the same time and by the same operation, that the seat is made.

It will be observed that in. the method described a rod, bar, or blank is first bent to form the shank and pin, and after the bending is done a seat for the eye-half of the hinge is upset at the base of the pin at or near its junction with the shank, and that these steps must follow each other in the order set forth.

What I claim as my invention, and desire to secure by Letters Patent, is'- l. In the manufacture of hinge-hooks the method of operation, substantially as herein before setj'orth.

2. The hook-half of a hook-andeye hinge, In testimony whereof I, the said WILLIAM made from a single Wrought-iron rod or bar, J. LEWIS, have hereunto set my hand. with a-n upset seat, n, at the base of the pin, WILLIAM J. LEWIS. as an improved article of manufacture.

3. In the hook-half of a hook-andeye Witnesses: hinge an upset head, s, in combination with W. N. PAXTON, an upset seat, n, substantially as set forth. G. H. CHRISTY. 

